Roshan describes the basic parts of an electric circuit using a shower as a model. which part of a circuit does the water pipe represent? the wire the switch the battery the resistor

The best answer would be the wire.

The water pipe acts like a wire in a circuit in a way that it directs the water to the shower head. The wire in a circuit conducts electricity to the appliances or connects the appliance to the power source. Water in this case would be the current and the pipe delivers it.

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.

the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  

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